Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt5-before/dlbo/Lts/Tools/DataSampleReceiver/CMakeLists.txt

@@ -0,0 +1,34 @@
+#
+# $Id$
+# $HeadURL$
+# $Author$
+#
+
+SET(SRCS
+  initialisation.cpp
+  topic_data.cpp
+  main.cpp
+)
+
+SET(HDRS
+  initialisation.h
+  topic_data.h
+)
+
+NGL_ADD_EXECUTABLE(AAR SV NO_TRANSLATION tDataSampleReceiver ${SRCS} ${HDRS})
+NGL_TARGET_LINK_LIBRARIES(tDataSampleReceiver
+  Qt5::Core
+  ddsdtc
+  ddsgen
+  ddsconnector
+  svcExmCommon
+  svcPpmCommon
+  ProjectConfig
+  LtsPluginLoader
+  LtsCommandLineParser
+  NGLLogger
+  nglcoreapplication
+  topic_type_plugin
+)
+NGL_INSTALL_TARGET(tDataSampleReceiver)
+NGL_INSTALL(AAR SV FILES log4cxx_tdsr.props DESTINATION bin)